Finding the Fourth Proportional to 28,075.60, 42,103.14 and 10,540.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,075.60 : 42,103.14 = 10,540.72 : x
2. Step 2: Convert to fraction form
   28,075.60/42,103.14 = 10,540.72/x
3. Step 3: Cross multiply
   28,075.60x = 42,103.14 × 10,540.72
4. Step 4: Simplify right side
   28,075.60x = 443,797,409.86
5. Step 5: Solve for x
   x = 443,797,409.86/28,075.60
6. Step 6: Final answer
   x = 15,807.23